Probably no theologian has exercised so profound an influence on Catholic theology during the last half of the 20th century as Karl Rahner. Although the vast majority of his work consisted of individual articles and lectures, Rahner's theology is rightly recognized as a theological system because of the fundamental unity that runs throughout his writings. The key to this unity of approach lies in a foundational structure of thought which is revealed in the philosophical works with which he began his intellectual career and which is apparent throughout his theological development. In this title Burke examines the structure of dialectical analogy as it appears in each of the major themes of Rahner's theology showing that it is an indispensable hermeneutical key to the correct interpretation of his thought. He also exposes a very real tension within the system, which needs to be addressed by Rahnerian scholars if the complex and profound balance of Rahner's theological vision is not to be endangered or even lost.